Error “Microsoft VBScript Runtime error ‘800a01ad'” when uploading a file or image, or when generating a file with “FSO” enabled.
The following operation can be solved. (Old questions, old answers, new articles)
 
Active Server Pages returns VBScript runtime error “800A01ad”
 
Using CreateObject to create COM components in Active Server Pages (ASP) may cause the following errors:

This error usually occurs when a dynamic link library (DLL) that a COM object depends on occurs in one of the following situations:
Could not be found in system Not in system path system inaccessible due to security Settings
Solutions:

re-register adodb. Stream component

example: the system disabled adodb. Stream
in ASP Server.CreateObject (” adodb. Stream”) will report an error. Regsvr32 “C:/Program Files/Common Files/System/ado/msado15. DLL”; Re-register and start FSO:

in the start-run: regsvr32 scrrun.dll, after the registration is successful, restart FSO.

start FSO: regsvr32 scrrun.dll
close FSO: regsvr32 /u scrrun.dll
after the first two steps successful, you can not restart IIS, but suggested to restart, the effect will be more.